License plate recognition,
on the device.

Fully offline ALPR for Expo, React Native, Swift and Kotlin. No servers, no per-scan fees. The basic scanner is free, also in production.

Features

Everything you need to read plates in a mobile app. Features marked PRO need a Pro license in release builds; they work without a key in debug, simulator, TestFlight and ad-hoc builds, so you can build with them before you buy.

Get started

Install the package and drop in the camera view. No license key needed to start.

npm install react-native-alpr

import { Button } from 'react-native';
import { AlprCameraView, useCameraPermissions } from 'react-native-alpr';

export default function Scanner() {
  const [permission, requestPermission] = useCameraPermissions();
  if (!permission?.granted) return <Button title="Allow camera" onPress={requestPermission} />;

  return (
    <AlprCameraView
      style={{ flex: 1 }}
      onPlates={(plates) => console.log(plates.map((p) => p.plate))}
    />
  );
}

npx install-expo-modules
npm install react-native-alpr
cd ios && pod install

import { Button } from 'react-native';
import { AlprCameraView, useCameraPermissions } from 'react-native-alpr';

export default function Scanner() {
  const [permission, requestPermission] = useCameraPermissions();
  if (!permission?.granted) return <Button title="Allow camera" onPress={requestPermission} />;

  return (
    <AlprCameraView
      style={{ flex: 1 }}
      onPlates={(plates) => console.log(plates.map((p) => p.plate))}
    />
  );
}

https://github.com/parkr-app/alpr-ios

import AlprKit

final class ScannerViewController: UIViewController, AlprCameraViewDelegate {
  private let camera = AlprCameraView()

  override func viewDidLoad() {
    super.viewDidLoad()
    camera.frame = view.bounds
    camera.delegate = self
    view.addSubview(camera)
    camera.isActive = true
  }

  func alprCameraView(_ view: AlprCameraView, didDetect plates: [AlprTrackedPlate], frameSize: CGSize) {
    print(plates.map(\.plate))
  }
}

repositories {
  maven("https://alpr.parkr.app/maven")
}

dependencies {
  implementation("app.parkr:alpr:0.4.0")
}

val camera = AlprCameraView(context).apply {
  listener = object : AlprCameraViewListener {
    override fun onPlates(view: AlprCameraView, plates: List<AlprTrackedPlate>, frameWidth: Int, frameHeight: Int) {
      Log.i("alpr", plates.joinToString { it.plate })
    }
  }
}
container.addView(camera)
camera.isActive = true

65 supported countries

The model reads the plate text and tells which country the plate is from.

• 🇦🇱Albania
• 🇦🇩Andorra
• 🇦🇷Argentina
• 🇦🇲Armenia
• 🇦🇺Australia
• 🇦🇹Austria
• 🇦🇿Azerbaijan
• 🇧🇭Bahrain
• 🇧🇾Belarus
• 🇧🇪Belgium
• 🇧🇦Bosnia and Herzegovina
• 🇧🇷Brazil
• 🇧🇬Bulgaria
• 🇰🇭Cambodia
• 🇨🇦Canada
• 🇭🇷Croatia
• 🇨🇾Cyprus
• 🇨🇿Czech Republic
• 🇩🇰Denmark
• 🇪🇪Estonia
• 🇫🇮Finland
• 🇫🇷France
• 🇬🇪Georgia
• 🇩🇪Germany
• 🇬🇮Gibraltar
• 🇬🇷Greece
• 🇬🇬Guernsey
• 🇭🇺Hungary
• 🇮🇸Iceland
• 🇮🇩Indonesia
• 🇮🇪Ireland
• 🇮🇱Israel
• 🇮🇹Italy
• 🇱🇻Latvia
• 🇱🇮Liechtenstein
• 🇱🇹Lithuania
• 🇱🇺Luxembourg
• 🇲🇾Malaysia
• 🇲🇹Malta
• 🇲🇽Mexico
• 🇲🇩Moldova
• 🇲🇨Monaco
• 🇲🇪Montenegro
• 🇳🇱Netherlands
• 🇳🇿New Zealand
• 🇲🇰North Macedonia
• 🇳🇴Norway
• 🇵🇱Poland
• 🇵🇹Portugal
• 🇶🇦Qatar
• 🇷🇴Romania
• 🇸🇲San Marino
• 🇷🇸Serbia
• 🇸🇬Singapore
• 🇸🇰Slovakia
• 🇸🇮Slovenia
• 🇪🇸Spain
• 🇸🇪Sweden
• 🇨🇭Switzerland
• 🇹🇭Thailand
• 🇹🇷Turkey
• 🇺🇦Ukraine
• 🇬🇧United Kingdom
• 🇺🇸United States
• 🇻🇳Vietnam

Pricing

Start free. Buy Pro once when you need the PRO features in production. One key covers your app on every platform.